Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 954 · 40 questions

Remember (Push, flow, resist): Voltage → volts (V), current → amperes (A), resistance → ohms (Ω), power → watts (W). milli (m) = ÷ 1000 and kilo (k) = × 1000: 250 mA = 0.25 A, 2.2 kΩ = 2200 Ω. Voltmeter across a part; ammeter in series.

1. 1.📏 How many kilo-ohms (kΩ) is 2900 Ω? =
2. 2.📏 Which unit measures the flow of charge? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
3. 3.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
4. 4.📏 How many amperes (A) is 2810 mA? =
5. 5.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
6. 6.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
7. 7.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 10 (c) 60 (d) 100
8. 8.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) power (c) resistance (d) energy used each second
9. 9.True or false: power is measured in volts (V). (a) True (b) False
10. 10.📏 Which unit measures current? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
11. 11.📏 How many kilowatts (kW) is 4350 W? =
12. 12.True or false: resistance is measured in volts (V). (a) False (b) True
13. 13.📏 How many ohms (Ω) is 2.1 kΩ?
14. 14.📏 How many kilowatts (kW) is 4100 W? =
15. 15.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 10 (c) 1024 (d) 1000
16. 16.True or false: the ammeter measures current. (a) True (b) False
17. 17.True or false: the flow of charge is measured in watts (W). (a) False (b) True
18. 18.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
19. 19.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
20. 20.True or false: the voltmeter measures voltage. (a) False (b) True
21. 21.True or false: the voltmeter measures current. (a) True (b) False
22. 22.📏 Which unit measures power? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
23. 23.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the water pressure (c) the tap handle (d) the pipe colour
24. 24.📏 How many watts (W) is 2.7 kW?
25. 25.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
26. 26.True or false: the ammeter measures voltage. (a) False (b) True
27. 27.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the flow of water (c) the water pressure (d) a narrow pipe
28. 28.📏 Which unit measures energy used each second? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
29. 29.📏 How many ohms (Ω) is 7.7 kΩ?
30. 30.Which of these is measured in amperes (A)? (a) power (b) how much a part resists (c) current (d) voltage
31. 31.Which of these is measured in volts (V)? (a) resistance (b) current (c) voltage (d) energy used each second
32. 32.True or false: current is measured in amperes (A). (a) False (b) True
33. 33.Which of these is measured in amperes (A)? (a) the push of a cell (b) resistance (c) the flow of charge (d) voltage
34. 34.📏 How many watts (W) is 2.5 kW?
35. 35.📏 How many milliamperes (mA) is 0.7 A?
36. 36.📏 Which unit measures voltage? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
37. 37.📏 How many kilowatts (kW) is 3000 W? =
38. 38.True or false: the voltmeter is joined across a part. (a) False (b) True
39. 39.📏 How many kilo-ohms (kΩ) is 1200 Ω? =
40. 40.True or false: energy used each second is measured in watts (W). (a) False (b) True

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